how to play the audio after given period of time

i want to play the audio file after th开发者_运维知识库e given period of time set by user.

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You could use an NSTimer for this purpose like Andy Suggests but it may just over complicate things in this particular situation. More simply, you could implement something like this:

- (void)playSound {
  [sound play];
}

- (void)someMethod {
  float delay = 2.0; // seconds
  [self performSelector:@selector(playSound) withObject:nil afterDelay:delay];
}

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How about using the NSTimer class?